Both have four doors, both are rear wheel drive with 6-speed manual transmissions, and between them they put out a whopping 1,116 horsepower. The contenders are the 2012 Cadillac CTS-V and the all new 2013 BMW M5. The Cadillac makes its power by way of a supercharged V8, whereby the BMW utilizes a V8 hooked up to two big-ass turbos. So, which one is the best? The guys over at Road and Track hit the track with both of these bad boys to find out the answer to that very question.